Sash-balance



(No Model.)

I'. R. HUNT.

SASHBALANGE.

Patnted Sept. 20, 1887.

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SPECIFICATION forming part of Letters Patent No. 370,334, datedSeptember 20, 1887.

Application filed June 29, 1887. Serial No. 24Q,833.

To all whom it may concern;

Be it known that I, FREDERIC R. HUNT, a citizen of the United States,residing at Leavenworth, in the county of Leavenworth and State ofKansas, have invented certain new and useful Improvements inSash-Holders; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

My invention relates to improvements in sash-holders, and has for itsobject to construct a holder in which no springs or weights arenecessary, and in which the parts will operate by friction without theaid of any projecting part to work by hand to hold the window-sash atany desired height.

4The invention will be hereinafter particularly described, and thenspecifically defined by the claims, reference being had to the drawingsforming a part hereof, and in which- Figure 1 is a front elevation of aportion of the lower sash and its frame, with a part of each broken awayto show the application of the holder. Fig. 2 is a view of the holder asapplied in Fig. 1, but on an enlarged scale and having one side of theholder-casing removed. Fig. 8 is a cross-section on the line x x of Fig.2, looking from the bottom, as indicated by arrow in Fig. 2.

In the drawings, the letter A designates a portion of the window-frame,and B the window-sash. In the edge of the window-sash is set a rack, C,which preferably extends from the top or near the top to the bottom ofthe sash.

rfhe window-frame is recessed, and in the recess is set the casing M,which contains the moving parts of the holder. The casing may be of anysuitable forni and construction to hold the operating parts. Thepreferable construction, however, is to cast the sides with the socketsD and E to receive the shaft of the main cog-wheel and one ofthefriction rollers or wheels, and with the ribs F, which, together withthe space between them, form a way inl which the frame G of one of thefriction roll- (No model.)

ers or wheels may be moved back and forth. These sockets and ribs willof course be duplicated, so that the opposite sides of the casing willbe provided with them and thebearings of the several-parts be formedthereby.

The main cog-wheel H is journaled so that a portion of its peripheryprojects through an opening, a, in the casing, in order that it mayengage with the teeth of the rack C. Within the casing the teeth of thecog-wheel mesh with the teeth of a pinion, I, on the shaft of thefriction roller or wheel J. This pinion and the friction roller or wheelmay be formed in anysuitable manner, so that one will turn with theother-that is, the pinion may be cast or otherwise secured to the sideof the roller or Wheel, or the two maybe keyed or otherwise secured tothe shaft, or otherwise formed, as may occur to the mechanic, so thatthey will turn together.

The friction roller or wheel ,l bears against a second friction rolleror wheel, K, and the friction between the two rollers or wheels is suchas to hold the sash at any desi-red adjustment, and yet when additionalweight or power is applied to the sash to overcome the friction the sashwill be raised or lowered, as it may be moved up or down. In order thatthe friction may be proportioned to the weight of the sash, or that thelatter may require more or less power to move it, one of the rollers orwheels-say the wheel K-is journaled ina movable bearing, which mayconsist of a frame, G, which, as previously stated, is guided and movesin the ways formed by the ribs F. This roller or wheel K is moved to orfrom the roller or wheel J by an adjusting or set screw, L, which passesthrough the front face of the casing and bears against or enters theframe, so that when screwed up it moves the roller or wheel toward theother friction roller or wheel to increase the friction, and whenunscrewed permits the made of brass, but may be made of other metal orsuitable material, and so may any ofthe parts be made of any suitablematerial.

The parts may be separately cast or formed, and the rollers and wheelscan be readily and easily adjusted to their positions inthe casl'OO ing,and when the removable side of the casing is putin place and fastened byany desired number of screws the parts are held securely in place inoperative positions. It will be observed that no springs are necessary,nor any projecting finger-piece, to render any of the parts operative,and that the sash is held to its adjustment by the friction between thetwo friction rollers or wheels, which can be readily regulated to meetthe circumstances or emergencyof any conditions. The casing is readilyapplied and concealed Within the windowframe, and can be applied towindows already in place, as Well as those that have not yet been set inplace. The parts also are few, and, besides being inexpensive, are notat all liable to get out of repair, and can be applied or placed inposition by comparatively unskilled persons, and any wear on thefriction rollers or wheels can of course be taken up by theadjusting-screw. The construction also permits the sash to be held fromafraction to any number of inches from the window-sill.

Only one holder is illustrated as applied to the window; but one on theother side will be applied in the same way. While I do not limit myselfto any point of application of the holder, still it is deemed best toapply it to the frame toward the upper end of the sash at such pointthat the sash can be applied and lifted above the point of applicationof the wheel-casing before the casing is put in place, as shown in thedrawings.

What is regarded as the best and simplest form of the invention has beenillustrated and described; but it is not intended that the in ventionshould be limited to all the details of construction, nor to thearrangement of the parts shown, as itisobvious that changes might bemade therein and the substance of the invention be employed.

Having described my invention and set forth its merits, what I claimis- 1. A sash-holder composed of a cog-wheel to engage with a rack, africtional roller or wheel in contact with a frictional bearing-surface,and a pinion intermediate of said frictional roller and gearing withsaid cog-wheel, said frictional roller holding said cog-wheel stationaryuntil the friction is overcome by power applied to the cog-wheel,substantially as described.

2. A sash-holder composed of a cog-wheel to engage with a rack, africtional roller or wheel in contact with a frictional bearing-surface,a pinion intermediate-of said frictional roller and gearing with thecog-wheel, and means for regulating the frictional contact of saidroller with the bearing-surface, substantially as described.

3. A sash-holder composed of the cog-wheel, frictional rollers or wheelsin contact with each other, a pinion intermediate of said rollers andgearing with the cog-wheel, and adjusting means for moving one roller toor from the other to regulate the friction betweenthe rollers,substantially as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

l FREDERIC R. HUNT.

Witnesses:

WM. G. HENDERSON, W. C. DUvALL.

